Access to [6.4.0]Carbocyclic Systems by Tandem Metathesis of Dienynes. A Step toward the Synthesis of a PreD3−D3 Transition State Analogue
摘要:
A new approach to the synthesis of linearly fused 6-8-6 tricarbocyclic systems, tandem ring-closing metathesis of dienynes, allows access to compounds with a carbon framework analogous to the proposed transition state of the isomerization of previtamin D-3 to vitamin D-3.
RCM for the Construction of Novel Steroid-like Polycyclic Systems. 1. Studies on the Synthesis of a PreD<sub>3</sub>-D<sub>3</sub> Transition State Analogue
作者:Rebeca García-Fandiño、María José Aldegunde、Eva M. Codesido、Luis Castedo、Juan R. Granja
DOI:10.1021/jo050568w
日期:2005.10.1
systems containing eight-membered carbocycles constitute a large class of compounds of importance in organic chemistry, biology, and medicine. Here we describe a new strategy by which complex polycyclic steroid-like systems can be constructed on the steroid CD framework, by a combination of RCM and Heck cyclizations. The method is exemplified by its application to the stereoselectivesynthesis of 6-8-6
Access to [6.4.0]Carbocyclic Systems by Tandem Metathesis of Dienynes. A Step toward the Synthesis of a PreD<sub>3</sub>−D<sub>3</sub> Transition State Analogue
作者:Eva M. Codesido、Luis Castedo、Juan R. Granja
DOI:10.1021/ol0158011
日期:2001.5.1
A new approach to the synthesis of linearly fused 6-8-6 tricarbocyclic systems, tandem ring-closing metathesis of dienynes, allows access to compounds with a carbon framework analogous to the proposed transition state of the isomerization of previtamin D-3 to vitamin D-3.